The AMG C63 S outdoes the RS5 with a 4.0-liter twin-turbo V-8 that churns out 503 hp and 516 lb-ft through a seven-speed dual-clutch automatic.

Compared to its predecessor, the new RS5 is equally as refined luxury wise, but it's a huge improvement in overall driving feel and performance. That said, enter the Mercedes-AMG C63 S, a 4.0 ...

Mercedes-AMG C63 S Coupe and new Audi RS5 tested back to back on road and track by CAR ...

It mixes luxury and bold styling versus a more agile and scientific looking RS5 or BMW M4. If one thing's for sure, everyone will notice you cruising along in a matte grey C63 AMG S.

Are you looking to buy a car but can't decide between a Audi RS5 or Mercedes-Benz C63 2021? Use our side by side comparison to help you make a decision. We compare design, practicality, price, ...

The Audi RS5 meets its arch rivals, the BMW M4 Competition Pack and the Mercedes-AMG C63 S for an evo supertest.

On this episode of Head 2 Head, Jonny Lieberman compares two German coupes: the 2014 Mercedes-Benz C63 AMG 507 Coupe and 2014 Audi RS 5 coupe.

The RS5 Coupe had only been launched in Britain a week ago, and already we have a drag race against its main competitors, the BMW M4 and Mercedes-AMG C63 S Coupe. Thank God for that!

Both the 2014 Mercedes-Benz C63 AMG Edition 507 and the 2014 Audi RS 5 are absolutely incredible, Porsche-punching German muscle cars.